AndrewB
Well-Known Member
I need to repaint the insides of my mild steel fresh water tanks. No problem about access - but what paint is safe and most suitable?
Water tanks - what paint to use?
- Thread starter AndrewB
- Start date
BarryT
Well-Known Member
I know you'll have to source it locally, but something like this ?
http://www.limekilnchandlers.co.uk/index.php?act=viewProd&productId=175
http://www.limekilnchandlers.co.uk/index.php?act=viewProd&productId=175
AndrewB
Well-Known Member
Surprising to see that, as I understood Bitumen based water tank paints were all withdrawn in the UK about 7 years ago following a safety scare.
I'd used it previously but was quite unable to buy it in the UK in 2003, and was told this by International Paints who formerly had it in their line.
I did source some in Spain. But bitumen doesn't work too well aboard in the tropics where we are next headed, inclined to go softish in very hot weather and adds a slight taint to the water.
I'd used it previously but was quite unable to buy it in the UK in 2003, and was told this by International Paints who formerly had it in their line.
I did source some in Spain. But bitumen doesn't work too well aboard in the tropics where we are next headed, inclined to go softish in very hot weather and adds a slight taint to the water.
oldsaltoz
Well-Known Member
Epoxy
AndrewB
Well-Known Member
[ QUOTE ]
Epoxy
[/ QUOTE ]Will any epoxy do? Or does it have to be to a particular spec?
I have plenty of Interlux Epoxy Primekote, much the same as International Interprotect, an off the shelf quick drying epoxy primer that is easy to use. But it does have a prominent notice POISON on the tin.
Epoxy
[/ QUOTE ]Will any epoxy do? Or does it have to be to a particular spec?
I have plenty of Interlux Epoxy Primekote, much the same as International Interprotect, an off the shelf quick drying epoxy primer that is easy to use. But it does have a prominent notice POISON on the tin.
BarryT
Well-Known Member
Andrew
Just put the link in as I seem to have thrown away the tin I used in Silhouette's tanks - but looked like a similar sort of thing.
Looking at this site seems as though you can use epoxies, but should be a certain sort. Good luck on finding the right thing.
http://www.hempel.co.uk/Internet/inecorp...52?OpenDocument
Just put the link in as I seem to have thrown away the tin I used in Silhouette's tanks - but looked like a similar sort of thing.
Looking at this site seems as though you can use epoxies, but should be a certain sort. Good luck on finding the right thing.
http://www.hempel.co.uk/Internet/inecorp...52?OpenDocument
DavidMcMullan
Well-Known Member
My tank is coated with International Paints Interline 925 Epoxy coating. However, Interline 925 is only available in 20 litre units
mortehoe
Well-Known Member
I'd first clean out the tanks and abrade them back to a mild steel finish paying particular attention to the recessed corners. Then I'd give them 2 coats of a cold galvanizing paint making sure that all the corners are well stippled in. (There are several USA manufacturers for this type of zinc rich paint with marine specs for mild steel)
IMO, if you just epoxied it and the epoxy cracked in say a corner you would get creeping rust behind the epoxy which would blow it off. Cold galvanizing works in all climates /forums/images/graemlins/smile.gif
I'm just wondering that if you used say 3 layers of cold galvainzing paint whether you would require any form of topcoat?
Best wishes to you and Lynette, N
IMO, if you just epoxied it and the epoxy cracked in say a corner you would get creeping rust behind the epoxy which would blow it off. Cold galvanizing works in all climates /forums/images/graemlins/smile.gif
I'm just wondering that if you used say 3 layers of cold galvainzing paint whether you would require any form of topcoat?
Best wishes to you and Lynette, N
AndrewB
Well-Known Member
Thanks guys, very helpful, looks like solvent-free epoxy is the way to go, Interline 925 or equivalent, though I'll only need a couple of liters! Nige - Thanks for the idea but I did think zinc was something of a no-no for drinking water, but I'll look again at that. Epoxy is pretty good at holding the rust at bay, and I quite expect to redo this paint job periodically
markdj
Well-Known Member
Zinc can be used...
http://www.zinga-uk.com/
Q.
Is Zinga certified for use with potable water?
A.
Yes. Zinga is certified to BS6920 (2000). Please visit the UK Reports page for further information.
Q.
Is Zinga able to be used in areas where food is stored or handled?
A.
Yes. The purity of the zinc in Zinga is 99.995%, which is medicinal quality. The binder is completely non-toxic, and completely safe.
http://www.zinga-uk.com/
Q.
Is Zinga certified for use with potable water?
A.
Yes. Zinga is certified to BS6920 (2000). Please visit the UK Reports page for further information.
Q.
Is Zinga able to be used in areas where food is stored or handled?
A.
Yes. The purity of the zinc in Zinga is 99.995%, which is medicinal quality. The binder is completely non-toxic, and completely safe.